Furnace.



C. EHLINGER.

FURNACE.

APPLICATION FILED MAR. 10, 1913.

1,084,321 Patented Jan. 13, 1914 PI 13251. E 15. 5-

COLUMBIA PLANDQRAPH IO-,WASHINGTON, B. c.

CHRISTOPHER EI-ILINGER, OF VTATERLOO, IOWA, ASSIGNOH, TO BRADFORD BRUCEHUNTER, OF WATER-LOO, IOW'A.

FURNACE.

noses-zero Specification of Letters Patent.

Application filed March 10, 1913.

Patented Jan. 31.3,19ld.

Serial No. 53,27.

To all whom it may concern:

Be it known that I, Cnmsrornnn EHLIN- one, a citizen of "he UnitedStates of America, and a resident of lVaterloo, Black hawk county,liowa, have invented certain new and useful Improvements in Furnaces, ofwhich the following is a specification.

My invention relates to improvements in furnaces, and the object of myimprovement is to supply for hot-air furnaces, a simple, inexpensive andeffectively working hood. adapted to equally divide the rising heatedair to deliver it to the several flues leading to the deliveryregisters. These objects I have accomplished by the means which arehereinafter described and claimed, and which are illustrated in theaccompanying drawings, in which:

Figure 1 is an elevation of a jacketed hotair furnace of the usual type,supplied with my improved distributing-hood, parts of the latter beingbroken away. Fig. 2 is a plan View of said distributing-hood. Fig. 3 isan enlarged longitudinal vertical section of one of thedistributing-segments or funnels of said hood and its adjustable jointor collar-connection for a flue.

Similar numerals and characters of reference denote corresponding partsthroughout the several views.

My improved hot-air furnace hood is formed of a plurality of likefunnel-shaped segments 1. As shown best in Fig. 3, each hollow segmentis truncated obliquely to furnish a circular port 5 with outer wallvertical and upper part having a gradual slope downwardly at Z) to acentral point 0 at which point all the converging inner parts of saidsegments are radially directed, so as to locate said point of meeting at0 lower than the level of said port and nearly as low as the lowercircular edgeof the hood formed by the joined. vertical walls a of thesegments.

Referring now to said Fig. 1, it will be seen that the lower circularedge of said hood is secured within the part 8 of the top of thecylindrical casing 6, which latter is in the usual way spaced from aninclosed furnace 7, the latter indicated by dotted lines only, saidfurnace being adapted to heat the air in the interspace between it inits casing, the heated air then rising as in dicated by the arrows topass upwardly into said hood above the furnace. Since theconvergence-point c of the hood-segments 1 is located near the top ofthe inclosed furnace, while the funnel-shaped segments of the hoodradiate therefrom divergingly up wardly in every direction, since thesegments are equal in dimensions, it is evident that the heated air willnotbe able to create cross or interfcring-currents within the hood, butas soon as received within the hood the whole body of heated air issimultaneously divided into equal portions or streams which are divertedby the sloping parts Z) of the segments into the ports to pass thenceinto communicating lines not here shown. Since it will be desirable inmany cases to so adapt the hood as to permit it to deliver to flueswhich are variously inclined thereto, l have provided in combinationwith said segments adjustable collars 2, being short cylinders havingone end cut slantingly as shown and then spread at a head 3 to fit overa narrow outivardlyflanged rim 4, on the segment about the port 5.Obviously, when said collar is rotated it will rock into differentinclinations relative to said hood. as is shown in Fig. 1 in twoinstances, where two collars are placed differently, one beinghorizontal, the other vertical, though in intermediate positions suchcollars may be inclined at different slopes to the horizontal orvertical as desired.

The hood may be formed of one piece or of joined segments, and may beeasily fitted on any furnace-casing.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is:

1. A furnace dome, comprising a radially crimped hollow body havingouter depending parts united to form a rim connection for the upper endof a spaced outer casing of hot-air furnace, the outer parts of the domebetween the crimps being higher than provide exit-ports and conjoined toradiate from a common depressed center and crimped to form hot-airfunnels, and obliquely-directed flue-connections movably seated aboutsaid exit-ports and adapted to be moved to vary their angles ofinclination relative to said dome.

3. A furnace dome, comprising a radially crimped hollow body, havingouter depending parts united to form a rim-connection for the upper endof a spaced outer casing of a hot-air furnace, the outer parts of thedome between the crinips being higher than those near its center, andsaid outer part-s having outwardly-opening outlet-ports the criinpsforming heated-air outlet-funnels converging inwardly and directeddownwardly to a common point lower than the level of theirdelivery-outlets.

Signed at lVaterloo, Iowa this 20th day of Feb., 1913.

CHRISTOPHER EHLINGER.

Witnesses G. G. KENNEDY, W. P. Hoxin.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents, Washington, D. C.

